Markus Chow Posted May 16, 2017 Share Posted May 16, 2017 I can't seem to find the answer anywhere about this use case. I am using a 18-35mm Sigma F1.8 apsc lens adapted to Commlite smart adapter with my a7sii. 1. When I am shooting in APSC (Crop) mode, is the camera smart enough to read the Sigma focal length distance from smart adapter to determine suitable image stabilization settings? 2. If i have to use manual focal distance settings (In CROP MODE), do I just select 18-35mm? or do I need to put in the apsc focal length equivalent 27-51mm? 3. I am unsure if I am using a FF lens at 135mm with manual IS focal length set at 135mm, if I go into crop mode do I need to adjust the focal length to 202.5mm? I suck at math and hopefully camera is smart enough to do it for me lol! Thanks for your insight and help! Mark Quote Link to comment Share on other sites More sharing options...
Nikkor Posted May 16, 2017 Share Posted May 16, 2017 2&3 The focal length does not change. Quote Link to comment Share on other sites More sharing options...
Geoff CB Posted May 17, 2017 Share Posted May 17, 2017 What Nikkor said, it's still the same focal length, the sensor would not need to move any more that it already does. Quote Link to comment Share on other sites More sharing options...
Markus Chow Posted May 17, 2017 Author Share Posted May 17, 2017 22 hours ago, Nikkor said: 2&3 The focal length does not change. 21 hours ago, Geoff CB said: What Nikkor said, it's still the same focal length, the sensor would not need to move any more that it already does. Thanks all for the confirmation! Quote Link to comment Share on other sites More sharing options...
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